#define INCHES_PER_CENTIMETER 0.394
#define CENTIMETER_PER_INCHES 1 / INCHES_PER_CENTIMETER

#define QUARTS_PER_LITER 1.057
#define LITER_QUARTS_PER 1 / QUARTS_PER_LITER

#define OUNCES_PER_GRAM 0.035
#define GRAM_OUNCES_PER 1 / OUNCES_PER_GRAM
